Needle Eye Day is a special in-game holiday for folks who have specialized in tailoring. Tailors participating in the event can earn several new items, including a peaked cap, festive suit, and a tailor's bag.
The festival will take place from July 18th to July 27th. Just as a reminder, please do not run with those fabric scissors like you just don't care, because it's dangerous. Massively loves you too much to see you succumb to scissor wounds.